Signal



Sept. 12, 1939. c. v. GlAlMO 2,172,468

SIGNAL Filed NOV. 26, 1935 INVENTOR ATTORN EY Patented Sept. 12, 1939UNITED STATES PATENT OFFICE The Corporation. corporationolNewYork NewYork, N. Y., a

am am a, 10:5, Serial N. 51,813

1 China.

The present invention relates to toy railroads,

and is more particularly directed toward a toy railroad having a vehicleprovided with a propulsion motor which can operate on either direct 5 oralternating current, and a sound producing signal operable by a secondmotor which will run on only one form of current, so that whenever thetrack is energizedwith either alternating or direct current thepropulsion motor may be operated,

10 while the motor (or the sound producing signal can be operated onlywhen the proper form 01 current is supplied.

The single figure in the accompanying drawing shows a circuitarrangement suitable for carrying II in series with it, or the field ofthis motor is made of high impedance so that insumcient alternatingcurrent will flow through the circuit of the motor SI for operating thesame. The sound producing signal operated by the motor 90 will 6therefore be idle an alternating current operation, but will operatewhen direct current is applied to the track.

, What is claimed is:

In combination, a toy railroad having rails, a 10 toy vehicle having apropulsion motor wound for operation by either direct current or byalternating current and connected to current collectors bearing on therails, means to supply to the rails electric current of either direct oralternating current elective for operating the propulsion motor, asecond vehicle carried motor connected to the current collectors andoperable by one of said forms of current only so that the propulsionmotor can be operated concurrently with go the second motor or while thesecond motor is idle by changing from one form of current to the other,and a sound producing signal operable from the second motor concurrentlywith the operation of the propulsion motor. 25

CHAR-LB V. GIAIHO.

